Topic
Diffraction grating
About: Diffraction grating is a research topic. Over the lifetime, 24884 publications have been published within this topic receiving 372437 citations. The topic is also known as: grating.
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Patent•
15 Jun 2000TL;DR: In this article, a light guide is formed as a thin film and impressed with a pattern of input and output diffraction gratings to control the transmission of light into and out of the light guide to efficiently illuminate the user interface.
Abstract: A system and method is described for distributing light within a light guide which is used for illuminating the user interface of an electronic device. The light guide is formed as a thin film and impressed with a pattern of input and output diffraction gratings to control the transmission of light into and out of the light guide to efficiently illuminate the user interface.
112 citations
Patent•
28 Jan 1992
TL;DR: A display having a diffraction grating pattern includes: (a) a flat substrate; and (b) at least one dot formed on a surface of the flat substrate, the dot being formed by a Diffraction Grating pattern as an aggregate of a plurality of curves obtained by translating a curve.
Abstract: A display having a diffraction grating pattern includes: (a) a flat substrate; and (b) at least one dot formed on a surface of the flat substrate, the dot being formed by a diffraction grating pattern as an aggregate of a plurality of curves obtained by translating a curve.
112 citations
TL;DR: In this article, an analytical solution for the radiated intensity distribution produced by an electron beam passing over a metallic diffraction grating (the Smith-Purcell effect) is derived.
Abstract: An analytic solution for the radiated intensity distribution produced by an electron beam passing over a metallic diffraction grating (the Smith-Purcell effect) is derived. The approach is based upon an expression for the current traveling over the grating surface and the method can deal with arbitrary grating profiles. Although collective behavior in the electron beam is neglected, very high power density is predicted if high energy, short electron bunches are employed. The electron beam characteristics of various accelerators are used to illustrate the potential of high energy, accelerator based Smith-Purcell radiation sources.
112 citations
TL;DR: Efficient guided-mode resonant polarization-controlled tunable color filters consisting of subwavelength gratings that are partially etched into a thin silicon-nitride film deposited on a glass substrate are demonstrated.
Abstract: We demonstrate efficient guided-mode resonant polarization-controlled tunable color filters. The devices consist of subwavelength gratings that are partially etched into a thin silicon-nitride film deposited on a glass substrate. Two color filters with grating periods of 300 nm and 370 nm are designed and fabricated. The 300-nm device exhibits green and blue colors and the 370-nm device generates red and yellow colors for TE and TM polarization, respectively. The pixels have a spectral bandwidth of ~12 nm with efficiencies exceeding 90% for TE polarization and 80% for TM polarization. The devices may find application in displays, image sensors, and biomedical imaging technologies.
112 citations
TL;DR: A new real-time interferometer based on diffraction phenomena is discussed, which consists of a point-diffraction interferometers fabricated on a transmission grating and achieved by simultaneously introducing a phase shift on the three separate channels of diffracted interferograms.
Abstract: A new real-time interferometer based on diffraction phenomena is discussed. It consists of a point-diffraction interferometer fabricated on a transmission grating. The real-time data-analysis capability is achieved by simultaneously introducing a phase shift (piston) on the three separate channels of diffracted interferograms. Mathematical analysis and preliminary observational results are included.
112 citations